Results 21 to 30 of about 57,136 (306)
Numerical Simulation Study on Characteristics of Tight Hard Sand Broken by Axe-shaped PDC Cutter
Shiyou jixie, 2021 The study on the specific rock breaking mechanism of axe-shaped PDC cutter in the existing literatures is relatively less, the rock breaking characteristic test data are mostly for field application data, and there is short of theoretical basis of tooth ...
Zhao Runqi +5 more
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Nihon Kikai Gakkai ronbunshu, 2018 The high productivity of gear skiving has caused the process to attract a lot of attention in recent years and taper shaped skiving cutters are generally used in current gear skiving.
Koichiro URIU +5 more
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Rock-Breaking Mechanism of Special-shaped PDC Cutter in Heterogeneous Granite
Shiyou jixie, 2022 In order to clarify the rock-breaking mechanism of special-shaped PDC cutter in the difficult-to-drill formations(e.g. granite), the finite element method was used to establish a mesoscopic heterogeneous granite model with different mineral components ...
Liu Hexing +6 more
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Numerical simulation on fragmentation of heterogeneous granite by axe-shaped PDC cutter
Jin'gangshi yu moliao moju gongchengObjectivesPolycrystalline diamond compact (PDC) bits are extensively utilized in the drilling industry. However, conventional PDC cutters are prone to failure when drilling through granite formations, leading to reduced drilling efficiency.
Jiajun LU +4 more
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Cookie cutters: Bisections with fixed shapes
Advances in Applied MathematicsIn a mass partition problem, we are interested in finding equitable partitions of smooth measures in $\mathbb{R}^d$. In this manuscript, we study the problem of finding simultaneous bisections of measures using scaled copies of a prescribed set $K$.
Patrick Schnider, Pablo Soberón
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Multidimensional Model of Surface Waviness Treated by Shaping Cutter
Procedia Engineering, 2017 Abstract The article observes the regression model of waviness of the treated profile surface resulting from the planning and implementation of multidimensional experiment. The analytical dependences linking waviness of the treated surface with elements of the profile milling mode and design parameters of the shaping cutting tool were determined ...
V.G. Gusev, A.A. Fomin
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ACCURACY RESEARCH OF THE DIAMETRICAL SIZES FORMING AT GEAR SHAPING BY STEPPED CUTTER [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2015 The paper presents research results of forming accuracy for diametrical sizes at gear shaping with stepped cutter and the traditional method. Analysis of static technological dimensional pitch size chain of wheels being cut is performed.
N. M. Rasulov, U. M. Nadirov
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Methods of processing of gas venting grooves of angular shape in matrices for rubber technical products [PDF]
Омский научный вестник, 2020 This article discusses the methods of processing gas exhaust grooves on molds for rubber goods planning on a curved surface. The purpose of this work is to improve the efficiency of processing gas-venting grooves of angular shape on molds for rubber ...
A. Yu. Shevchenko, A. Yu. Popov
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Shiyou jixieWhen the PDC bit is used to drill conglomerate formations， the frequent impact loads reduce the expected life of PDC cutter， leading to frequent bit changes and ultimately affecting drilling efficiency.
Shi Jiangang +5 more
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ECONOMIC EFFICIENCY OF ROLLING GEAR-SHAPING CUTTERS OF ASSEMBLY CONSTRUCTION- BASIC PROVISIONS AND ASSESSMENT [PDF]
Fiabilitate şi Durabilitate, 2021 Technical backgrounds and reasons of economic and social efficiency of assembly rolling gear-shaping tool are given. It is considered development of methodological procedure of aggregative generalized calculation of its economic efficiency.
Yury GUTSALENKO, Tatyana TRETYAK
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